路由器的配置文件---破解思科路由器密码.pptVIP

路由器配置文件、IOS和密码;教学内容;1.路由器启动顺序;ROM;;配置存放器组成;位数;0x2102：工业默认值

0x2142：从FLASH中启动，但不使用NVRAM中的配置文件〔用于口令恢复〕

使用命令showversion可以查看存放器的值。

Router#showversion

CiscoIOSSoftware,2800Software(C2800NM-ADVIPSERVICESK9-M),Version12.4(15)T1,RELEASESOFTWARE(fc2)

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ROM:SystemBootstrap,Version12.1(3r)T2,RELEASESOFTWARE(fc1)

Copyright(c)2000byciscoSystems,Inc.

Configurationregisteris0x2102;路由器密码破解;破解步骤;1、重启路由器。

2、快速按〔Ctrl+Break〕中断启动，进入rommon模式。

3、rommon1confreg0x2142//设置存放器的值为0x2142，即忽略NVRAM中的配置信息〔详见上节〕。

rommon2reset//重启

4、按〔Ctrl+C〕进入退出setup模式，进入命令行界面。

Routerenable

Router#copystartup-configrunning-config

//将以前的配置拷贝到内存，注意如果没有这步，将会把以前的配置丧失。

Router(config)#enablepasswordcisco//修改密码

Router(config)#config-register0x2102//恢复存放器的值

Router(config)#exit

Router#write//保存配置;IOS备份;

r1#showflash:查看FLASH中的IOS，并将其名字复制。

Systemflashdirectory:

FileLengthName/status

3r1#copyflash:tftp

Sourcefilename[]?

Addressornameofremotehost[]?

Destinationfilename[c2800nm-advipservicesk9-mz.124-15.T1.bin]?

Writingc2800nm-advipservicesk9-mz.124-15.T1.bin...!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!

[OK-bytes

备份成功;IOS恢复;r1#showflash:查看FLASH中的IOS，并将其名字复制。

Systemflashdirectory:

FileLengthName/status

3r1#deleteflash:删除FLASH中的IOS

Deletefilename[]?

Deleteflash:/c2800nm-advipservicesk9-mz.124-15.T1.bin?[confirm]

r1#showflash:

Systemflashdirectory:

FileLengthName/status没有IOS文件

;

r1#copytftp:flash

Addressornameofremotehost[]?

Sourcefilename[]?

Destinationfilename[c2800nm-advipservicesk9-mz.124-15.T1.bin]?

Loadingc2800nm-advipservicesk9-mz.